The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 1997
Filed:
Jun. 20, 1996
Yasuo Urata, Kanagawaken, JP;
Mamoru Fujita, Kanagawaken, JP;
Teruyo Sugiura, Chibaken, JP;
Fumitaka Ohizumi, Chibaken, JP;
Naoyuki Yoshida, Chibaken, JP;
Chisso Corporation, Osaka, JP;
Abstract
A production process with good efficiency, and applicable to production of a synthetic intermediate of a new quinolone anti-fungus agent CP-99219, is provided. A production process of an intermediate of a new quinolone compound expressed by the formula (IV) ##STR1## wherein R.sup.3 represents a benzyl group, a diphenylmethyl group, etc. and R.sup.4 represents a linear or branched alkyl group of 1 to 8C, a cycloalkyl group, etc. which process employs as a starting substance, a cyclopropanetricarboxylic acid triester expressed by the formula (I) ##STR2## wherein R.sup.1 and R.sup.2 represent a linear or branched alkyl group, a cycloalkyl group, an aryl group or an aralkyl group, and passes through seven steps.